MATRIXSYNTH: E&MM Spectrum Synthesizer Demo

Tuesday, January 30, 2018

E&MM Spectrum Synthesizer Demo


Published on Jan 29, 2018 scratchanitch

"Resurrecting my old E&MM Spectrum synthesizer I built as a teenager back in the early 80's. The VCOs, VCF and VCAs are CEM-based chips and, with that sub osc on VCO1, have a pretty nice amount of grit - perhaps not surprising given the Pro-One pedigree. Did a little mod inside to bypass the not-really-worth-servicing keyboard - so now I no longer have to worry about it drifting sharp when controlling it purely through its CV/GATE in. In addition to pitch, the second CV channel from the nifty little SQ-1 feeds into the controller input which can be routed to VCF, PW, and even VCO-2 for some paraphonic fun."

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